430 ILCS 50/2.05
"Hazardous material" means a substance or material in a quantity and form which may pose an unreasonable risk to health and safety or property and which is designated a hazardous material pursuant to the "Hazardous Materials Transportation Act", (PL 93-633).
(from Ch. 127, par. 1252.05)
(Source: P.A. 79-1442.)